Here we go. According to CNET, Internet Explorer 7 is going to be sent out automatically to XP users as a priority Windows Update upon its launch. We’ll see a massive migration, and IE6 numbers will take a sharp dive in the very near future. This is a good thing.
However, a sharp surge of immediate adoption could be a little painful for those not currently testing in IE7; now is most definitely the time to start, if that’s you. (Hey, don’t feel bad, I still only have IE7 beta 1 myself.)
Also, as of the launch (no set date yet, some time in Q4 is the current best guess), I have a strong feeling the case for testing in IE5.x will be unjustifiably hard to make in most cases. Enjoy your last few months of the box model hack.